R6 Method documentation hyperlinks broken on Mac

The links to method descriptions in the help for R6 methods don't work, at least on Mac. An example is in the basictabler package, documentation for "BasicTable". Screen shot below for reference. None of the hyperlinks function. Clicking on them causes the pane to flicker but does not navigate. This is true for any documented R6 object regardless of package. Other hyperlinks work fine.

They work on my Mac

> packageVersion("basictabler")
[1] ‘1.0.2’

Interesting....I have the same version of basictabler, but it doesn't matter what package or version. Every other hyperlink in help docs work, just not methods for R6 objects. I'm curious if any other Mac users are experiencing this, since at least one apparently is not!